Ch 0417 / 38
Step 04.17 — B idler: refit the M5×40 SHCS from the top¶
Step 17 of 38 · Chapter 04 — A/B drive units and front idlers
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Parts:
- the same M5×40 SHCS · already on the bench
Do: Drop it in from the top, through the arm's top boss, and run it down into the M5 nut in the arm's foot until the head seats and the stack is clamped firm, into steel.
Check
Head seated in the top boss, both bearings spin free, and the arm still slides fore-aft in the frame's slots (verify on bench).
What you're looking at
Manual p.70: the M5×40 axle refitted from the top through the arm's top boss into its captive nut, mirror of Step 04.10. Clamped firm; it is the axle, not the tensioner.
Source: Voron manual p.70